/Engine/Source/Runtime/SlateCore/Public/Widgets/SBoxPanel.h
Delegate signature for handling the drop ofFDragDropEventonto target of type ItemType
typedef TBaseDelegate_FourParams< [FReply](API\Runtime\SlateCore\Input\FReply), const [FDragDropEvent](API\Runtime\SlateCore\Input\FDragDropEvent) &, [SDragAndDropVerticalBox::EItemDropZone](API\Runtime\SlateCore\Widgets\SDragAndDropVerticalBox\EItemDropZone), int32, [SVerticalBox::FSlot](API\Runtime\SlateCore\Widgets\SVerticalBox\FSlot) * > FOnAcceptDrop